Apparatus for measuring the viscosity of liquids.



A. BALDUS. APPARATUS FOR MEASURING THE VISCOSITY OF LIQUIDS.

APPLIOATION FILED SEPT. 1 9, 1910.

1,021,229. Patented Mar. 26, 1912.

- liquid containing UNITED STATES. PATENT an'ron pat ons, oi?- FRANKrOR'r-oNwHE-MAI'N, ornament;

nrnana'rus on. MEASURING THE VISCOSITY or mourns.

T 0 all whom it mag concern: l

..Be it known that I. -ANTON BALoUs,'a subject of the German Emperor, and a resident' oi Frankforton-the-Main, Germany, have invented; certain new and useful Improvements int-Apparatus for Measuring the Visqosity of Liquids, of which the following is a specification.

My invention relates toimproveinents in apparatus for. measuring the viscosity of liquids, and more particularly to apparatus of this class in whichthe viscosity of the L liquid is determined by the velocity of an air bubble which rises within the liquid;

The object; the improvements is to pro-. videan appa atus of this class which gives very accurate results, and which permits measurements (to be made at any desired temperature of the liquid;

For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawing in w hieh Figure 1' is a perspective view of an ap paratus constructed in accordance with the present invention; Fig. 2 is a detail viewiof the pivotallymounted plate, showing two supported thereby; modification.

Referring illustrated in the drawing,

Fig; 3 illustrates a slight a metal frame or 'easi'ng'l carries, at'itstop,-a metal plate '4: formedwhh grooves or.

lits 3 adapted to receive a tube or tubes '10 filled with the lliquid the viscosity of whichjs to'be determined, and a thermometer 1 tubes located thereon The said plate and the tube or can be heated to any temperature by any preferred means; In the example shown the casing is provided with anopening 5 through which a burnerglfor example a gas burner 12 can be inserted into the casing beof the said trunnions The plate. 4' has a rockeosing l by means of plroject laterally and t e casing. By means low the said plate.

ing support on the trunnion's 2- which through the wall of.

the plate can be turns for whichpurpose in the form of the invention shown in Fig; 1 one of the trunnions s of square cross-section at its end, and 1S adapted to receive a key: of corresponding form. On its surface the said metal plat isgraduated as 'indichted at 13.

Specification of Letters Patent.

tubes and a thermometer to the example of the apparatus of;said tube,

Isitione'd to cause air t ll 611E111 tomove longn Within the side wall of the casing in form shown in Fig. 1 and near th e end :0

the same bores 6 are'prm'ided whieh are aihnted to receive a pin for supportingon end of the plate 4 when it is rocked about axis into any desired Thereby the viscosity of termined under various angular positions-of cosity can be measured at any" desired fern perature. The bottom plate of thejfralne orted on set screws 8 by position can be horizontally adjusted.

In order ,to measure by means of a stopper. Care should be taken, that the stoppers-extend into th tubes as nearly as possible the same' tance, so that, inthehorizontalposition of the tubes, the bubbles formed by the air within the difi'erent tubes havethe' same Patent-e11 Mar. 26, 7 Application filedSeptember 19,1910. Serial m. 582,744. I

inclined position It a liquid can be de means of which the metal plate when In its normal the viscosity of a; liquid, forexample that of an oil, the tubes 1Q are-filled. to about an inch from their upper ends with the oil, whereupon they are closed,

length. The tubes are so adjusted on the plate i that the After pushing the pin through holes 6 the plate 4 is rocked a out thetrunnions' 2, until. it bears on the pin. Now the bubbles therein are opposite one of the graduations of'the' scales l3,

one of the bubbles begin to ascend withi th tubes an I I the time .is observed within which they pass through a certain distance. From the saidthe velocity .01: the bubble is obtained by division, as is known distance and the time in the arty and the velocity "thus obtained'is a measure for'the viscosity of the liquid;

A modification of i trhe plate 4 in its rocked position is shown in 1 pla te 14: on one of the trunnions 2 which. is formedwith indentations adapted to be en- 3 and consists in securing a c rcularthe means for setting gaged by a locking liook 15 on the casing 1 I claim herein as my invention:

1. In an apparatus for-measuring orde termining the viscosity of liquids,' the combination of a tube like container for the d liquidto be tested having a transparent side wall, and a carrier for said tube adapted to rock about'an axis extending transversely of the length of the container and havinga sectionlextending longitudinally whereby the'latter can be pogradu ated liquid to 'wall, a carrier adapted to h1nation' of a suite-b 40 a is; horizontal axis,

tudinally thereof and along said graduated section of the carrier in a form visible throu b said transparent side wall.

2. 11 an apparatus for measurin or determining the viscosity of liquids, tie combination of a tube like container for the be tested having a transparent side support the container and to rock about an axis extending transversely of the length thereof, and having adjacent the eontamer a series of grad nations, whereby the container can be 0- sitioned to cause air therein to move longitudinally of the container in a form visible r through said transparent side Wall, and the rate of movement of said air determined by said raduations, and means for heating the liquid.

3'. In an apparatus for measuring or determining the visoosit of liquids, the combination of a, suitable support, a carrier mounted upon said support to rock about a horizontal axis, and having formed on one surface a series of graduatlons, a tube like container for the liquid to be tested, having a trans arent side wall, mounted on the carrier an extending across the aforesaid horizontal aiis, and longitudinally of the scale formed by said graduations, whereby the position of, said container, can be varied. to cause air therein to move longitudinally of theeontainer in a form visible throu h said transparent side wall, and the rate 0 travel ofiwhich can be determined by aid of said scale, a thermometer on said carrier, and means for heating the liquid. 4. In an apparatus for measurirm or determining the viseosit of liquids, t e corn: e support, a carrier support to rock about plate mounted on said and provided. on its upper liquid to be tested.

be mounted on the carrier plate adjacent e graduations thereon, whereby the con Walla ii ported by and exteml v rfac e .with a series of graduations, and a I f ube likeeontainer for the avlng a transparent side.

wall, and adapted tor )g the eosity of liquids, the com-- 1) son of a h "low easing, plate mrmnteal urn about a horizrzmtnl iransw at the top of the casing and. hat, upper surface a longitudinally ei'lmiding groove or recess, a lube like r-oii'ieinc-i' for the liquid to be lesl'm'l having a aspen-int side wall and adapted to be sup .Med within said groove or recess, and meal a for holding said plate in an inclined petition, for the purpose dowerilied.

6. In an apparat: for the scribed, the combination of a hull a plate mounted to turn about axis at the upper end ef the "ti-Sink: and ham ing a groove or re for in its m ter surface and adapts, our mining the iiqiiid h vice within the ing the plate in 2 In an apps, termining the vi, bination of a mounted on said transversely ext tube like contain tested, having a ti:

ing 5 said carrier, a toothed the carrier sou n means on. the ,ipp disk to hold the our in an inclined. pesi. scribed In testimony name to this speeifi L two subscribing .filfllfiii' llii-iZLLEJU Witnesses:

FRANZ Harassment, Enwi'n Darren-r. 

